BMW F30 LCI F32 Gearbox Oil Pump 320d B47 B47D20A Automatic 0501327294 GA8HP50Z

BMW F30 LCI F32 Gearbox Oil Pump 320d B47 B47D20A Automatic is a specialized lubrication system component for the automatic transmission, designed for BMW models equipped with the B47 engine. Thanks to its precise construction, it ensures stable oil pressure, which translates into smooth automatic transmission operation and reduces the risk of overheating and excessive component wear. This solution is dedicated to users who expect proven, factory-grade geometry and a reliable fit for their drivetrain.

Specifications and technical data

• SKU: 5A131A2-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A131A2
• Substitutable numbers: 0501327294, 24345A131A2, 24008632213, 24348632184, 24348687824, 24008632205, 24348687831, 24348687828, 5A131A2, 8632213, 8632184, 8687824, 8632205, 8687831, 8687828
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and function in the drivetrain

The described oil pump works with the automatic transmission in the drivetrain of BMW F30 LCI and F32 series vehicles with the B47 unit. It is responsible for the forced circulation of oil in the transmission, which is crucial for the proper operation of clutches, control valves, and hydraulic components. Stable lubrication reduces friction, improves gear shifting quality, and helps maintain the correct operating temperature of the transmission.

Due to the specific nature of automatic transmission design, a properly functioning oil pump has a direct impact on:

• transmission response time during gear changes,
• smoothness of gear engagement under load,
• durability of clutch packs and hydraulic components,
• stability of oil pressure throughout the entire transmission operating range.

Compatibility and fit for BMW

The pump has been designed as a component compatible with the GA8HP50Z transmission in BMW vehicles with the B47/B47D20A engine, which ensures factory-perfect fitment for oil channels and the control system. The appropriate body geometry and connection layout allow for installation in place of the original component without the need for structural modifications.

Thanks to the use of dedicated part numbers and interchangeable numbers, the pump can be used as a replacement in various variants of the same transmission family, provided it complies with the vehicle's service documentation. Before installation, it is recommended to verify compatibility with the specific car configuration based on the VIN and catalog data.

Technical and operational characteristics

As a lubrication system component in the Automatic transmissions category, the oil pump operates under demanding temperature and pressure conditions. The design is intended for use with transmission oil meeting the specifications recommended by the vehicle manufacturer, while maintaining appropriate service intervals. A properly functioning pump supports:

• maintaining correct oil pressure throughout the entire engine RPM range,
• even lubrication of moving parts inside the transmission,
• effective transmission cooling during city and highway driving,
• reduction of noise and vibrations resulting from insufficient lubrication.

During installation, it is recommended to thoroughly flush the system, use fresh oil of the appropriate grade, and check the tightness of all connections to fully utilize the component's potential.

Condition, origin, and benefits of choosing a used part

The offered oil pump is a used part, sourced from a dismantled BMW vehicle. This type of component, when following the correct installation procedure and proper transmission maintenance, can still provide stable operating parameters and represent an economically justified alternative to a new part. Choosing an original component from a dismantle allows you to maintain the factory characteristics of the transmission and reduce the risk of fitment issues.

To maximize the potential of a used part, it is worth reading the practical tips regarding the purchase and operation of transmissions described in the article Transmission: manual, automatic or DSG – common faults and a guide to buying a used transmission. Additionally, in the context of long-term operation of dismantled components, the guide How to extend the life of used car parts?, which discusses, among other things, the principles of maintaining drivetrain components, may be helpful.

Support for automatic transmission system upgrades

If you are planning a comprehensive repair or upgrade of the transmission area in your BMW and need other elements from the same group, such as housings, control modules, or additional hydraulic components, check out the available parts in the BMW Automatic Transmissions category.

Selecting an oil pump from the same group of components as the other transmission elements allows you to maintain the technical consistency of the system, facilitates diagnostics, and reduces the risk of incompatibility between individual components. As a result, the entire drivetrain can operate in a predictable manner consistent with the vehicle manufacturer's specifications.